Deviance is defined as any behavior or attribute that violates cultural norms and elicits a negative or positive reaction from others. What is considered deviant depends on social and cultural context rather than being inherent to any act itself. Sociological theories of deviance propose that deviance arises from social structures and learning processes rather than individual characteristics. Robert Merton's strain theory argues that deviance results from a discrepancy between societal expectations and the means available to achieve culturally approved goals. While deviance disrupts social systems, it also serves functions like reinforcing norms and catalyzing social change. Crime is a specific form of deviance that violates laws, but not all deviance is illegal. Social control refers to efforts by groups